adding power support

to ensure this repo builds on ppc64le , added support here

Author: ghatwala

.travis.yml

@@ -14,6 +14,9 @@
 # limitations under the License.
 
 language: java
+os:
+  - linux
+  - linux-ppc64le
 
 jdk:
   - oraclejdk8
@@ -25,4 +28,4 @@ jdk:
 
 after_success:
   - mvn -B -V clean test jacoco:report coveralls:report -Ptravis-jacoco
-  
+